HP StorageWorks 2000 Modular Smart Array Reference Guide (481599-003, August 2008)

Glossary 313
RAS Reliability, availability, and serviceability. These headings refer to a
variety of features and initiatives all designed to maximize equipment
uptime and mean time between failures, minimize downtime and the
length of time necessary to repair failures, and eliminate or decrease
single points of failure in favor of redundancy.
rebuild The regeneration and writing onto one or more replacement disks of all
of the user data and check data from a failed disk in a virtual disk with
RAID level 1, 10, 3, 5, 6, and 50. A rebuild can occur while
applications are accessing data on the system’s virtual disks.
recipient The network device that receives an iSCSI login request from another
device (the originator). For a login request from an iSCSI host initiator
to a storage system, the host is the originator and the storage system is
the recipient.
recovery In an active-active configuration, recovery (also known as failback) is
the act of returning ownership of controller resources from a surviving
controller to a previously failed (but now active) controller. The
resources include virtual disks, cache data, host ID information, and
LUNs and WWNs.
remote scripting CLI
client A command-line interface (CLI) that enables you to manage the system
from a remote management host. The client communicates with the
management software through a secure out-of-band interface, HTTPS,
and provides the same control and monitoring capability as the browser
interface. The client must be installed on a host that has network access
to the system.
rollback The process of resetting a volume's data to become identical to a
snapshot taken of that volume.
SAN See Storage Area Network (SAN).
SAS Serial Attached SCSI.
SATA Serial Advanced Technology Attachment.
SC See Storage Controller (SC).
SCSI Small Computer System Interface. A collection of ANSI standards and
proposed standards which define I/O buses primarily intended for
connecting storage subsystems or devices to hosts through host bus
adapters. (SNIA)